双盐添加剂在高压可充电电池中的协同作用
Thuy Duong Pham1, Junam Kim2, Hye Min Oh3
1Faculty of Biotechnology, Chemistry and Environmental Engineering, Phenikaa University, Hanoi, 10000, Vietnam.
ChemSusChem
|June 3, 2024
概括
这项研究通过使用双盐添加剂来提高金属电池的稳定性,以创建含有无机丰富的固体电解质介相 (SEI). 这提高了电池的性能和寿命.
科学领域:
- 电化学 电化学 电化学
- 材料科学 材料科学 材料科学
- 储能 储能 储能 储能 储能 储能
背景情况:
- 高能量密度金属电池 (LMB) 的稳定性至关重要,并且严重依赖于固体电解质介相 (SEI) 组成.
- 开发稳定的SEI层对于推进电池技术和防止退化至关重要.
研究的目的:
- 调查二盐添加剂对SEI形成的影响及其对金属电池性能的影响.
- 开发一种新的电解质配方,以提高LMB的稳定性和效率.
主要方法:
- 将二酸和二酸和二酸添加剂纳入碳酸基电解质中,其中含有二三甲硫) 胺.
- 对SEI层组成的分析,包括LiF,聚酸和Li3N的识别.
- 电化学测试的和和NCM811细胞,以评估coulombic效率和循环稳定性.
主要成果:
- 使用EL-DO电解质配方成功形成了富含无机物的SEI层.
- 该EL-DO配方在Lithium-ion DCCu电池中显示了98.2%的平均coulombic效率,并在Lithium-ion DCNCM811电池中保持稳定的容量.
- 电流采集器的腐蚀被EL-DO电解质有效地缓解.
结论:
- 双盐添加剂协同增强SEI特性,从而提高金属电池的稳定性和性能.
- 电解质EL-DO显示出金属电池和离子电池的巨大潜力,提供高放电容量和周期寿命.
- 这项研究为开发下一代高能量密度电池提供了一个有前途的战略.
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